[1][2] As patron saint of the Mettlach parish, his relics are carried through the town by procession at the annual Pentecost celebration.

[3] Leudwinus spent his early life at the royal court of Austrasia[3] and was styled Count of Treves.

As he slept the sun changed positions exposing him to its hot rays, but an eagle swept down and sat on Leudwinus with its wings spread out.

Coincidentally, Leudwinus happened to be napping at the site of the Miracle Eagle near the chapel of St. Denis of Paris.

Leudwinus saw this as a God-sent sign to establish a Benedictine monastery at that site, and it soon developed into a Christian missionary center.

However, local customs prevented this, so Leudwinus' family decided to let the dead saint choose his own place of burial.

[1][3] In 990, St. Mary's Church was replaced by a new structure called the Old Tower, the oldest preserved stone building in Saar.

During the French Revolution, the monastery was purchased by the Boch family, who had the building demolished and built Liutwinus Cathedral in Mettlach, where the relics of the saint are located today.